Audi Internal Battery Charger

Internal battery charger for my 2003 Audi A4 Quattro Avant.


I like my car. I like driving my car. However, due to COVID, I do not have much reason to drive my car. So that means its often sitting outside. And sometimes when I try to start it after it has been sitting outside for a while, the battery is flat. This is very annoying. So I came up with a solution, install a battery charger inside of the car. Unlike most battery chargers this one would be internal and would be installed in the trunk and wired directly to the battery. The circuit is fused for safety. All that is needed to charge the car is the 120V power cable to be plugged into an electrical outlet.

Charger Side